228387277 has 4 divisors (see below), whose sum is σ = 240407680. Its totient is φ = 216366876.

The previous prime is 228387253. The next prime is 228387329. The reversal of 228387277 is 772783822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228387277 - 2¹¹ = 228385229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228387227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6010173 + ... + 6010210.

It is an arithmetic number, because the mean of its divisors is an integer number (60101920).

Almost surely, 2^228387277 is an apocalyptic number.

It is an amenable number.

228387277 is a deficient number, since it is larger than the sum of its proper divisors (12020403).

228387277 is a wasteful number, since it uses less digits than its factorization.

228387277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12020402.

The product of its digits is 526848, while the sum is 46.

The square root of 228387277 is about 15112.4874524348. The cubic root of 228387277 is about 611.2571734528.

The spelling of 228387277 in words is "two hundred twenty-eight million, three hundred eighty-seven thousand, two hundred seventy-seven".